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Xing X, Zhong W, Tang P, Tao Q, Lu X, Zhong L. Tracking intracellular nuclear targeted-chemotherapy of chidamide-loaded Prussian blue nanocarriers by SERS mapping. Colloids Surf B Biointerfaces 2023; 229:113469. [PMID: 37536167 DOI: 10.1016/j.colsurfb.2023.113469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/16/2023] [Accepted: 04/08/2023] [Indexed: 08/05/2023]
Abstract
The novel histone deacetylase drug chidamide (CHI) has been proven to regulate gene expression associated with oncogenesis via epigenetic mechanisms. However, huge side effects such as non-targeting, poor intracellular accumulation and low nuclear entry efficiency severely restrict its therapeutic efficacy. Dual-targeted nanodrug delivery systems have been proposed as the solution. Herein, we developed a CHI-loaded drug delivery nanosystem based on Prussian blue (PB) nanocarrier, which combines surface-enhanced Raman scattering (SERS) tracking function with cancer cell/nuclear-targeted chemotherapy capability. With the property of background-free SERS mapping, PB nanocarriers can serve as tracking agents to localize intracellular CHI. The incorporation of targeted molecules specifically enhances the cancer cell/nuclear internalization and chemotherapeutic effects of CHI-loaded PB nanocarriers. In vitro cytotoxicity assay clearly shows that the constructed CHI-loaded PB nanocarriers have significant inhibitory on Jurkat cell proliferation. Furthermore, SERS spectral analysis of Jurkat cells incubated with the CHI-loaded PB nanocarriers reveals obvious features of cellular apoptosis: DNA skeleton fragmentation, chromatin depolymerization, histone acetylation, and nucleosome conformation change. Importantly, this CHI-loaded PB nanocarrier will provide a new insight for lymphoblastic leukemia targeted chemotherapy.
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Affiliation(s)
- Xinyue Xing
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, China
| | - Wanqing Zhong
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, China
| | - Ping Tang
- China Guangdong Provincial Key Laboratory of Photonics Information Technology, Guangdong University of Technology, Guangzhou, China
| | - Qiao Tao
- China Guangdong Provincial Key Laboratory of Photonics Information Technology, Guangdong University of Technology, Guangzhou, China
| | - Xiaoxu Lu
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, China.
| | - Liyun Zhong
- China Guangdong Provincial Key Laboratory of Photonics Information Technology, Guangdong University of Technology, Guangzhou, China.
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2
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Xie Y, Tang P, Xing X, Zhao Y, Cao S, Liu S, Lu X, Zhong L. In situ exploring Chidamide, a histone deacetylase inhibitor, induces molecular changes of leukemic T-lymphocyte apoptosis using Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 241:118669. [PMID: 32653824 DOI: 10.1016/j.saa.2020.118669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/15/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
Though it has been demonstrated that Chidamide (CS055/HBI-8000), a novel benzamide class of histone deacetylase (HDAC) subtype-selectively inhibitor, reveals better anticancer effect in acute leukemia, but it remains unknown about the precise mechanism of Chidamide-induced acute leukemia cell apoptosis due to the lack of in situ molecular changes information. Based on Raman spectral analysis, we find that the action of Chidamide on Jurkat cell will lead to an addition of an acetyl group to a specific lysine residue at the end of histone amino acid, and greatly enhance the acetylation of histones H1, H2A, H2B, H3, and H4, and then destroy the electrostatic force between the alkaline terminal of the positive charged arginine side chain and the negative charged DNA of phosphate group, finally cause the depolymerization of DNA and histone octamer in chromatin nucleosome depolymerization and the relaxation of chromatin. Accordingly, the accumulation of reactive oxygen species (ROS) and the decreasing of mitochondrial membrane potential (MMP) are observed. For comparison, we also present the corresponding results of suberoylanilide hydroxamic acid (SAHA) and MS-275 inhibitors. The achieved results show that proliferation of Chidamide-treated Jurkat cells is low relative to MS-275 or SAHA, and the action of Chidamide or MS-275 on Jurkat cells lead to obvious increasing in histones H1, H2A, H2B, H3, and H4, whereas the action effect of SAHA is mainly observed in histones H1, H2A, H2B, H3 but weak in histone H4. Moreover, it is found that Chidamide-induced histone H3 acetylation in Jurkat cells is stronger than MS-275 and SAHA. Collectively, by Raman spectral analysis, we achieve the dynamic behavior of biochemical components, molecular conformation and morphological changes of HDAC inhibitors-treated Jurkat cells. Importantly, our research is the first to demonstrate that the action site of HDAC inhibitors on Jurkat cell is located in the DNA minor groove. Most importantly, the application of Raman spectrum in exploring in-situ molecular changes information, histone acetylation modification in epigenetics, drug action sites and cell cycle affected by HDAC inhibitors will supply new idea and reference for the design and modification of HDAC inhibitors.
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Affiliation(s)
- Yue Xie
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Ping Tang
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Xinyue Xing
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Yao Zhao
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China; Brain academy of South China Normal University, Guangzhou 510631, China
| | - Shengqi Cao
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Shengde Liu
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Xiaoxu Lu
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
| | - Liyun Zhong
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China.
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3
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Monitoring the molecular composition of live cells exposed to electric pulses via label-free optical methods. Sci Rep 2020; 10:10471. [PMID: 32591612 PMCID: PMC7319994 DOI: 10.1038/s41598-020-67402-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/08/2020] [Indexed: 11/21/2022] Open
Abstract
The permeabilization of the live cells membrane by the delivery of electric pulses has fundamental interest in medicine, in particular in tumors treatment by electrochemotherapy. Since underlying mechanisms are still not fully understood, we studied the impact of electric pulses on the biochemical composition of live cells thanks to label-free optical methods: confocal Raman microspectroscopy and terahertz microscopy. A dose effect was observed after cells exposure to different field intensities and a major impact on cell peptide/protein content was found. Raman measurements reveal that protein structure and/or environment are modified by the electric pulses while terahertz measurements suggest a leakage of proteins and other intracellular compounds. We show that Raman and terahertz modalities are a particularly attractive complement to fluorescence microscopy which is the reference optical technique in the case of electropermeabilization. Finally, we propose an analytical model for the influx and efflux of non-permeant molecules through transiently (electro)permeabilized cell membranes.
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4
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Féré M, Gobinet C, Liu LH, Beljebbar A, Untereiner V, Gheldof D, Chollat M, Klossa J, Chatelain B, Piot O. Implementation of a classification strategy of Raman data collected in different clinical conditions: application to the diagnosis of chronic lymphocytic leukemia. Anal Bioanal Chem 2019; 412:949-962. [PMID: 31853604 DOI: 10.1007/s00216-019-02321-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/31/2019] [Accepted: 12/03/2019] [Indexed: 02/06/2023]
Abstract
The literature is rich in proof of concept studies demonstrating the potential of Raman spectroscopy for disease diagnosis. However, few studies are conducted in a clinical context to demonstrate its applicability in current clinical practice and workflow. Indeed, this translational research remains far from the patient's bedside for several reasons. First, samples are often cultured cell lines. Second, they are prepared on non-standard substrates for clinical routine. Third, a unique supervised classification model is usually constructed using inadequate cross-validation strategy. Finally, the implemented models maximize classification accuracy without taking into account the clinician's needs. In this paper, we address these issues through a diagnosis problem in real clinical conditions, i.e., the diagnosis of chronic lymphocytic leukemia from fresh unstained blood smears spread on glass slides. From Raman data acquired in different experimental conditions, a repeated double cross-validation strategy was combined with different cross-validation approaches, a consensus label strategy and adaptive thresholds able to adapt to the clinician's needs. Combined with validation at the patient level, classification results were improved compared to traditional strategies.
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Affiliation(s)
- M Féré
- BioSpecT EA 7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France
| | - C Gobinet
- BioSpecT EA 7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France.
| | - L H Liu
- BioSpecT EA 7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France
| | - A Beljebbar
- BioSpecT EA 7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France
| | - V Untereiner
- Cellular and Tissular Imaging Platform PICT, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France
| | - D Gheldof
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Hematology Laboratory, Rue Dr Gaston Therasse, Catholic University of Louvain, 5530, Yvoir, Belgium
| | - M Chollat
- TRIBVN, 39 Rue Louveau, 92320, Châtillon, France
| | - J Klossa
- TRIBVN, 39 Rue Louveau, 92320, Châtillon, France
| | - B Chatelain
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Hematology Laboratory, Rue Dr Gaston Therasse, Catholic University of Louvain, 5530, Yvoir, Belgium
| | - O Piot
- BioSpecT EA 7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France.,Cellular and Tissular Imaging Platform PICT, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims, France
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5
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Štiavnická M, García-Álvarez O, Ulčová-Gallová Z, Sutovsky P, Abril-Parreño L, Dolejšová M, Řimnáčová H, Moravec J, Hošek P, Lošan P, Gold L, Fenclová T, Králíčková M, Nevoral J. H3K4me2 accompanies chromatin immaturity in human spermatozoa: an epigenetic marker for sperm quality assessment. Syst Biol Reprod Med 2019; 66:3-11. [DOI: 10.1080/19396368.2019.1666435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Miriama Štiavnická
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Olga García-Álvarez
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
- Health and Biotechnology (SaBio) GroupIREC, (CSIC-UCLM-JCCM), Albacete, Spain
| | - Zděnka Ulčová-Gallová
- Genetika Plzeň, s.r.o. (Ltd.), Pilsen – Černice, Czech Republic
- Department of Gynecology and Obstetrics, Charles University, Pilsen, Czech Republic
| | - Peter Sutovsky
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
- Department of Obstetrics, Gynecology and Women’s Health, University of Missouri, Columbia, MO, USA
| | - Laura Abril-Parreño
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
- Laboratory of Animal Reproduction, Department of Biological Sciences, University of Limerick, Limerick, Irelan
| | - Martina Dolejšová
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Hedvika Řimnáčová
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Jiří Moravec
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Petr Hošek
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Petr Lošan
- Genetika Plzeň, s.r.o. (Ltd.), Pilsen – Černice, Czech Republic
| | - Lukáš Gold
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Tereza Fenclová
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Milena Králíčková
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Plzeň, Czech Republic
| | - Jan Nevoral
- Biomedical Center in Pilsen, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Plzeň, Czech Republic
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6
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Jonas O, Kang JW, Singh SP, Lammers A, Nguyen FT, Dasari RR, So PTC, Langer R, Cima MJ. In vivo detection of drug-induced apoptosis in tumors using Raman spectroscopy. Analyst 2018; 143:4836-4839. [PMID: 30070266 PMCID: PMC6175619 DOI: 10.1039/c8an00913a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We describe a label-free approach based on Raman spectroscopy, to study drug-induced apoptosis in vivo. Spectral-shifts at wavenumbers associated with DNA, proteins, lipids, and collagen have been identified on breast and melanoma tumor tissues. These findings may enable a new analytical method for rapid readout of drug-therapy with miniaturized probes.
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Affiliation(s)
- Oliver Jonas
- Department of Radiology, Brigham & Women’s Hospital, Boston, MA, 02115, USA
| | - Jeon Woong Kang
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Surya P. Singh
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Alex Lammers
- Department of Radiology, Brigham & Women’s Hospital, Boston, MA, 02115, USA
| | - Freddy T. Nguyen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ramachandra R. Dasari
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Peter T. C. So
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Robert Langer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael J. Cima
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Materials Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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7
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Štiavnická M, Abril-Parreño L, Nevoral J, Králíčková M, García-Álvarez O. Non-Invasive Approaches to Epigenetic-Based Sperm Selection. Med Sci Monit 2017; 23:4677-4683. [PMID: 28961228 PMCID: PMC5633068 DOI: 10.12659/msm.904098] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Since sperm size and form do not necessarily provide information on internal sperm structures, novel sperm markers need to be found in order to conduct assisted reproductive therapies (ART) successfully. Currently, the priority of andrologists is not only to select those sperm able to fertilize the oocyte, but also a high quality of sperm that will guarantee a healthy embryo. Evidence of this shows us the importance of studying sperm intensively on genetic and epigenetic levels, because these could probably be the cause of a percentage of infertility diagnosed as idiopathic. Thus, more attention is being paid to posttranslational modifications as the key for better understanding of the fertilization process and its impact on embryo and offspring. Advances in the discovery of new sperm markers should go hand in hand with finding appropriate techniques for selecting the healthiest sperm, guaranteeing its non-invasiveness. To date, most sperm selection techniques can be harmful to sperm due to centrifugation or staining procedures. Some methods, such as microfluidic techniques, sperm nanopurifications, and Raman spectroscopy, have the potential to make selection gentle to sperm, tracking small abnormalities undetected by methods currently used. The fact that live cells could be analyzed without harmful effects creates the expectation of using them routinely in ART. In this review, we focus on the combination of sperm epigenetic status (modifications) as quality markers, with non-invasive sperm selection methods as novel approaches to improve ART outcomes.
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Affiliation(s)
- Miriama Štiavnická
- Laboratory of Reproductive Medicine of Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Laura Abril-Parreño
- Laboratory of Reproductive Medicine of Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Jan Nevoral
- Laboratory of Reproductive Medicine of Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Milena Králíčková
- Laboratory of Reproductive Medicine of Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Olga García-Álvarez
- Laboratory of Reproductive Medicine of Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
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8
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The Feulgen reaction: A brief review and new perspectives. Acta Histochem 2017; 119:603-609. [PMID: 28739089 DOI: 10.1016/j.acthis.2017.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 07/07/2017] [Accepted: 07/07/2017] [Indexed: 11/21/2022]
Abstract
The Feulgen reaction has been proposed by Robert Feulgen and Heinrich Rossenbeck for the identification of DNA nearly a hundred years ago. Since then, many other applications of this cytochemical/topochemical procedure at qualitative and quantitative level have been proposed in relation to DNA and its role in chromatin in human, animal and plant cells. In this article, we briefly review some fundamental aspects of the Feulgen reaction and current applications of such a method in studies of altered chromatin texture, including its association with or preceding changes in transcriptional activities and effect on epigenetic marks. Further perspectives on the use of the Feulgen reaction will depend of the proposal of innovative biological questions in which its reveals appropriate.
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9
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Demonstration of the Protein Involvement in Cell Electropermeabilization using Confocal Raman Microspectroscopy. Sci Rep 2017; 7:40448. [PMID: 28102326 PMCID: PMC5244372 DOI: 10.1038/srep40448] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 12/06/2016] [Indexed: 01/14/2023] Open
Abstract
Confocal Raman microspectroscopy was used to study the interaction between pulsed electric fields and live cells from a molecular point of view in a non-invasive and label-free manner. Raman signatures of live human adipose-derived mesenchymal stem cells exposed or not to pulsed electric fields (8 pulses, 1 000 V/cm, 100 μs, 1 Hz) were acquired at two cellular locations (nucleus and cytoplasm) and two spectral bands (600–1 800 cm−1 and 2 800–3 100 cm−1). Vibrational modes of proteins (phenylalanine and amide I) and lipids were found to be modified by the electropermeabilization process with a statistically significant difference. The relative magnitude of four phenylalanine peaks decreased in the spectra of the pulsed group. On the contrary, the relative magnitude of the amide I band at 1658 cm−1 increased by 40% when comparing pulsed and control group. No difference was found between the control and the pulsed group in the high wavenumber spectral band. Our results reveal the modification of proteins in living cells exposed to pulsed electric fields by means of confocal Raman microspectroscopy.
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Happillon T, Untereiner V, Beljebbar A, Gobinet C, Daliphard S, Cornillet-Lefebvre P, Quinquenel A, Delmer A, Troussard X, Klossa J, Manfait M. Diagnosis approach of chronic lymphocytic leukemia on unstained blood smears using Raman microspectroscopy and supervised classification. Analyst 2016; 140:4465-72. [PMID: 26017101 DOI: 10.1039/c4an02085e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have investigated the potential of Raman microspectroscopy combined with supervised classification algorithms to diagnose a blood lymphoproliferative disease, namely chronic lymphocytic leukemia (CLL). This study was conducted directly on human blood smears (27 volunteers and 49 CLL patients) spread on standard glass slides according to a cytological protocol before the staining step. Visible excitation at 532 nm was chosen, instead of near infrared, in order to minimize the glass contribution in the Raman spectra. After Raman measurements, blood smears were stained using the May-Grünwald Giemsa procedure to correlate spectroscopic data classifications with cytological analysis. A first prediction model was built using support vector machines to discriminate between the two main leukocyte subpopulations (lymphocytes and polymorphonuclears) with sensitivity and specificity over 98.5%. The spectral differences between these two classes were associated to higher nucleic acid content in lymphocytes compared to polymorphonuclears. Then, we developed a classification model to discriminate between neoplastic and healthy lymphocyte spectra, with a mean sensitivity and specificity of 88% and 91% respectively. The main molecular differences between healthy and CLL cells were associated with DNA and protein changes. These spectroscopic markers could lead, in the future, to the development of a helpful medical tool for CLL diagnosis.
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Affiliation(s)
- Teddy Happillon
- Université de Reims Champagne-Ardenne, Équipe MéDIAN Biophotonique et Technologies pour la Santé, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096, Reims Cedex, France
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11
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Dekky B, Wahart A, Sartelet H, Féré M, Angiboust JF, Dedieu S, Piot O, Devy J, Emonard H. Cellular Cholesterol Distribution Influences Proteolytic Release of the LRP-1 Ectodomain. Front Pharmacol 2016; 7:25. [PMID: 26903870 PMCID: PMC4751253 DOI: 10.3389/fphar.2016.00025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 01/26/2016] [Indexed: 11/13/2022] Open
Abstract
Low-density lipoprotein receptor-related protein-1 (LRP-1) is a multifunctional matricellular receptor composed of a large ligand-binding subunit (515-kDa α-chain) associated with a short trans-membrane subunit (85-kDa β-chain). LRP-1, which exhibits both endocytosis and cell signaling properties, plays a key role in tumor invasion by regulating the activity of proteinases such as matrix metalloproteinases (MMPs). LRP-1 is shed at the cell surface by proteinases such as membrane-type 1 MMP (MT1-MMP) and a disintegrin and metalloproteinase-12 (ADAM-12). Here, we show by using biophysical, biochemical, and cellular imaging approaches that efficient extraction of cell cholesterol and increased LRP-1 shedding occur in MDA-MB-231 breast cancer cells but not in MDA-MB-435 cells. Our data show that cholesterol is differently distributed in both cell lines; predominantly intracellularly for MDA-MB-231 cells and at the plasma membrane for MDA-MB-435 cells. This study highlights the relationship between the rate and cellular distribution of cholesterol and its impact on LRP-1 shedding modulation. Altogether, our data strongly suggest that the increase of LRP-1 shedding upon cholesterol depletion induces a higher accessibility of the sheddase substrate, i.e., LRP-1, at the cell surface rather than an increase of expression of the enzyme.
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Affiliation(s)
- Bassil Dekky
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
| | - Amandine Wahart
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
| | - Hervé Sartelet
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
| | - Michaël Féré
- CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France; MéDIAN-Biophotonique et Technologies pour la Santé, UFR de Pharmacie, Université de Reims Champagne-ArdenneReims, France; Plateforme d'Imagerie Cellulaire et Tissulaire, Université de Reims Champagne-ArdenneReims, France
| | - Jean-François Angiboust
- CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France; MéDIAN-Biophotonique et Technologies pour la Santé, UFR de Pharmacie, Université de Reims Champagne-ArdenneReims, France; Plateforme d'Imagerie Cellulaire et Tissulaire, Université de Reims Champagne-ArdenneReims, France
| | - Stéphane Dedieu
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
| | - Olivier Piot
- CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France; MéDIAN-Biophotonique et Technologies pour la Santé, UFR de Pharmacie, Université de Reims Champagne-ArdenneReims, France; Plateforme d'Imagerie Cellulaire et Tissulaire, Université de Reims Champagne-ArdenneReims, France
| | - Jérôme Devy
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
| | - Hervé Emonard
- Laboratoire de Signalisation et Récepteurs Matriciels, UFR de Sciences Exactes et Naturelles, Université de Reims Champagne-ArdenneReims, France; CNRS, Matrice Extracellulaire et Dynamique Cellulaire, UMR 7369Reims, France
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Ichimura T, Chiu LD, Fujita K, Machiyama H, Kawata S, Watanabe TM, Fujita H. Visualizing the appearance and disappearance of the attractor of differentiation using Raman spectral imaging. Sci Rep 2015; 5:11358. [PMID: 26079396 PMCID: PMC5155549 DOI: 10.1038/srep11358] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/21/2015] [Indexed: 01/02/2023] Open
Abstract
Using Raman spectral imaging, we visualized the cell state transition during differentiation and constructed hypothetical potential landscapes for attractors of cellular states on a state space composed of parameters related to the shape of the Raman spectra. As models of differentiation, we used the myogenic C2C12 cell line and mouse embryonic stem cells. Raman spectral imaging can validate the amounts and locations of multiple cellular components that describe the cell state such as proteins, nucleic acids, and lipids; thus, it can report the state of a single cell. Herein, we visualized the cell state transition during differentiation using Raman spectral imaging of cell nuclei in combination with principal component analysis. During differentiation, cell populations with a seemingly homogeneous cell state before differentiation showed heterogeneity at the early stage of differentiation. At later differentiation stages, the cells returned to a homogeneous cell state that was different from the undifferentiated state. Thus, Raman spectral imaging enables us to illustrate the disappearance and reappearance of an attractor in a differentiation landscape, where cells stochastically fluctuate between states at the early stage of differentiation.
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Affiliation(s)
- Taro Ichimura
- Laboratory for Comprehensive Bioimaging, Riken QBiC, 6-2-3 Furuedai, Suita, Osaka, Japan
| | - Liang-da Chiu
- Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Katsumasa Fujita
- Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Hiroaki Machiyama
- WPI, Immunology Frontier Research Center, Osaka University, 1-3 Yamadaoka, Suita, Osaka, Japan
| | - Satoshi Kawata
- 1] Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan [2] Nanophotonics Laboratory, RIKEN, Wako, Saitama, Japan, 2-1 Hirosawa, Wako, Saitama, Japan
| | - Tomonobu M Watanabe
- Laboratory for Comprehensive Bioimaging, Riken QBiC, 6-2-3 Furuedai, Suita, Osaka, Japan
| | - Hideaki Fujita
- 1] Laboratory for Comprehensive Bioimaging, Riken QBiC, 6-2-3 Furuedai, Suita, Osaka, Japan [2] WPI, Immunology Frontier Research Center, Osaka University, 1-3 Yamadaoka, Suita, Osaka, Japan
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D'inca H, Namur J, Ghegediban SH, Wassef M, Pascale F, Laurent A, Manfait M. Automated Quantification of Tumor Viability in a Rabbit Liver Tumor Model after Chemoembolization Using Infrared Imaging. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1877-88. [PMID: 25979795 DOI: 10.1016/j.ajpath.2015.03.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/12/2015] [Accepted: 03/16/2015] [Indexed: 01/09/2023]
Abstract
The rabbit VX2 tumor is a fast-growing carcinoma model commonly used to study new therapeutic devices, such as catheter-based therapies for patients with inoperable hepatocellular carcinoma. The evaluation of tumor viability after such locoregional therapies is essential to directing hepatocellular carcinoma management. We used infrared microspectroscopy for the automatic characterization and quantification of the VX2 liver tumor viability after drug-eluting beads transarterial chemoembolization (DEB-TACE). The protocol consisted of K-means clustering followed by principal component analysis (PCA) and linear discriminant analysis (LDA). The K-means clustering was used to classify the spectra from the infrared images of control or treated tumors and to build a database of many tissue spectra. On the basis of this reference library, the PCA-LDA analysis was used to build a predictive model to identify and quantify automatically tumor viability on unknown tissue sections. For the DEB group, the LDA model determined that the surface of tumor necrosis represented 91.6% ± 8.9% (control group: 33.1% ± 19.6%; Mann-Whitney P = 0.0004) and the viable tumor 2.6% ± 4% (control group: 62.2% ± 15.2%; Mann-Whitney P = 0.0004). Tissue quantification measurements correlated well with tumor necrosis (r = 0.827, P < 0.0001) and viable tumor (r = 0.840, P < 0.0001). Infrared imaging and PCA-LDA analysis could be helpful for easily assessing tumor viability.
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Affiliation(s)
- Hadrien D'inca
- Median Unit, University of Reims Champagne-Ardenne, Centre National de la Recherche Scientifique, Matrice Extracellulaire et Dynamique Cellulaire, Reims, France.
| | | | - Saida Homayra Ghegediban
- ArchimMed SARL, Jouy en Josas, France; Department of Pathology, Lariboisiere Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Michel Wassef
- ArchimMed SARL, Jouy en Josas, France; Department of Pathology, Lariboisiere Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Florentina Pascale
- Research Center for Interventional Imagery, Assistance Publique-Hôpitaux de Paris and National Institute for Agricultural Research, Jouy-En-Josas, France
| | - Alexandre Laurent
- Research Center for Interventional Imagery, Assistance Publique-Hôpitaux de Paris and National Institute for Agricultural Research, Jouy-En-Josas, France; Department of Neuroradiology, Hôpital Lariboisère, Assistance Publique-Hôpitaux de Paris, Paris, France; Materials and Complex Systems Laboratory, Centre National de la Recherche Scientifique, Paris, France
| | - Michel Manfait
- Median Unit, University of Reims Champagne-Ardenne, Centre National de la Recherche Scientifique, Matrice Extracellulaire et Dynamique Cellulaire, Reims, France
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Ichimura T, Chiu LD, Fujita K, Kawata S, Watanabe TM, Yanagida T, Fujita H. Visualizing cell state transition using Raman spectroscopy. PLoS One 2014; 9:e84478. [PMID: 24409302 PMCID: PMC3883674 DOI: 10.1371/journal.pone.0084478] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 11/14/2013] [Indexed: 11/22/2022] Open
Abstract
System level understanding of the cell requires detailed description of the cell state, which is often characterized by the expression levels of proteins. However, understanding the cell state requires comprehensive information of the cell, which is usually obtained from a large number of cells and their disruption. In this study, we used Raman spectroscopy, which can report changes in the cell state without introducing any label, as a non-invasive method with single cell capability. Significant differences in Raman spectra were observed at the levels of both the cytosol and nucleus in different cell-lines from mouse, indicating that Raman spectra reflect differences in the cell state. Difference in cell state was observed before and after the induction of differentiation in neuroblastoma and adipocytes, showing that Raman spectra can detect subtle changes in the cell state. Cell state transitions during embryonic stem cell (ESC) differentiation were visualized when Raman spectroscopy was coupled with principal component analysis (PCA), which showed gradual transition in the cell states during differentiation. Detailed analysis showed that the diversity between cells are large in undifferentiated ESC and in mesenchymal stem cells compared with terminally differentiated cells, implying that the cell state in stem cells stochastically fluctuates during the self-renewal process. The present study strongly indicates that Raman spectral morphology, in combination with PCA, can be used to establish cells' fingerprints, which can be useful for distinguishing and identifying different cellular states.
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Affiliation(s)
- Taro Ichimura
- Quantitative Biology Center, Riken, Suita, Osaka, Japan
| | - Liang-da Chiu
- Department of Applied Physics, Osaka University, Suita, Osaka, Japan
| | - Katsumasa Fujita
- Department of Applied Physics, Osaka University, Suita, Osaka, Japan
| | - Satoshi Kawata
- Department of Applied Physics, Osaka University, Suita, Osaka, Japan
- Nanophotonics Laboratory, Riken, Wako, Saitama, Japan
| | | | - Toshio Yanagida
- Quantitative Biology Center, Riken, Suita, Osaka, Japan
- Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Hideaki Fujita
- Quantitative Biology Center, Riken, Suita, Osaka, Japan
- Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
- * E-mail:
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Poplineau M, Doliwa C, Schnekenburger M, Antonicelli F, Diederich M, Trussardi-Régnier A, Dufer J. Epigenetically induced changes in nuclear textural patterns and gelatinase expression in human fibrosarcoma cells. Cell Prolif 2013; 46:127-36. [PMID: 23510467 DOI: 10.1111/cpr.12021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 12/01/2012] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Chromatin texture patterns of tumour cell nuclei can serve as cancer biomarkers, either to define diagnostic classifications or to obtain relevant prognostic information, in a large number of human tumours. Epigenetic mechanisms, mainly DNA methylation and histone post-translational modification, have been shown to influence chromatin packing states, and therefore nuclear texture. The aim of this study was to analyse effects of these two mechanisms on chromatin texture, and also on correlation with gelatinase expression, in human fibrosarcoma tumour cells. MATERIALS AND METHODS We investigated effects of DNA hypomethylating agent 5-aza-2'-deoxycytidine (5-azadC) and histone deacetylase inhibitor trichostatin A (TSA) on nuclear textural characteristics of human HT1080 fibrosarcoma cells, evaluated by image cytometry, and expression of gelatinases MMP-2 and MMP-9, two metalloproteinases implicated in cancer progression and metastasis. RESULTS 5-azadC induced significant variation in chromatin higher order organization, particularly chromatin decondensation, associated with reduction in global DNA methylation, concomitantly with increase in MMP-9, and to a lesser extent, MMP-2 expression. TSA alone did not have any effect on HT1080 cells, but exhibited differential activity when added to cells treated with 5-azadC. When treated with both drugs, nuclei had higher texture abnormalities. In this setting, reduction in MMP-9 expression was observed, whereas MMP-2 expression remained unaffected. CONCLUSIONS These data show that hypomethylating drug 5-azadC and histone deacetylase inhibitor TSA were able to induce modulation of higher order chromatin organization and gelatinase expression in human HT1080 fibrosarcoma cells.
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Affiliation(s)
- M Poplineau
- Unité MEDyC, URCA-CNRS FRE 3481, SFR Cap-Santé, Faculté de Pharmacie, Université de Reims, Reims, France
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Chan JW. Recent advances in laser tweezers Raman spectroscopy (LTRS) for label-free analysis of single cells. JOURNAL OF BIOPHOTONICS 2013; 6:36-48. [PMID: 23175434 DOI: 10.1002/jbio.201200143] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 10/15/2012] [Accepted: 10/28/2012] [Indexed: 05/19/2023]
Abstract
Laser tweezers Raman spectroscopy (LTRS), a technique that integrates optical tweezers with confocal Raman spectroscopy, is a variation of micro-Raman spectroscopy that enables the manipulation and biochemical analysis of single biological particles in suspension. This article provides an overview of the LTRS method, with an emphasis on highlighting recent advances over the past several years in the development of the technology and several new biological and biomedical applications that have been demonstrated. A perspective on the future developments of this powerful cytometric technology will also be presented.
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Affiliation(s)
- James W Chan
- Department of Pathology and Laboratory Medicine, University of California, Davis, Sacramento, CA 95817, USA.
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Mello MLS, Vidal BC. Changes in the infrared microspectroscopic characteristics of DNA caused by cationic elements, different base richness and single-stranded form. PLoS One 2012; 7:e43169. [PMID: 22937023 PMCID: PMC3427352 DOI: 10.1371/journal.pone.0043169] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 07/20/2012] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The infrared (IR) analysis of dried samples of DNA and DNA-polypeptide complexes is still scarce. Here we have studied the FT-IR profiles of these components to further the understanding of the FT-IR signatures of chromatin and cell nuclei. METHODOLOGY/PRINCIPAL FINDINGS Calf thymus and salmon testis DNA, and complexes of histone H1, protamine, poly-L-lysine and poly-L-arginine (histone-mimic macromolecules) with DNA were analyzed in an IR microspectroscope equipped with an attenuated total reflection diamond objective and Grams software. Conditions including polypeptides bound to the DNA, DNA base composition, and single-stranded form were found to differently affect the vibrational characteristics of the chemical groups (especially, PO(2)(-)) in the nucleic acid. The antisymmetric stretching (ν(as)) of the DNA PO(2)(-) was greater than the symmetric stretching (ν(s)) of these groups and increased in the polypeptide-DNA complexes. A shift of the ν(as) of the DNA PO(2)(-) to a lower frequency and an increased intensity of this vibration were induced especially by lysine-rich histones. Lysine richness additionally contributed to an increase in the vibrational stretching of the amide I group. Even in simple molecules such as inorganic phosphates, the vibrational characteristics of the phosphate anions were differently affected by different cations. As a result of the optimization of the DNA conformation by binding to arginine-rich polypeptides, enhancements of the vibrational characteristics in the FT-IR fingerprint could be detected. Although different profiles were obtained for the DNA with different base compositions, this situation was no longer verified in the polypeptide-DNA complexes and most likely in isolated chromatin or cell nuclei. However, the ν(as) PO(2)(-)/ν(s) PO(2)(-) ratio could discriminate DNA with different base compositions and DNA in a single-stranded form. CONCLUSIONS/SIGNIFICANCE FT-IR spectral profiles are a valuable tool for establishing the vibrational characteristics of individualized chromatin components, such as DNA and DNA-polypeptide complexes in dried samples.
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Affiliation(s)
| | - B. C. Vidal
- Department of Structural and Physiological Biology, Institute of Biology, University of Campinas (Unicamp), Campinas, São Paulo, Brazil
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Drescher D, Kneipp J. Nanomaterials in complex biological systems: insights from Raman spectroscopy. Chem Soc Rev 2012; 41:5780-99. [DOI: 10.1039/c2cs35127g] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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